Resurfacing mechanism.



I. c. BUGKMINSTERQ RESURFACING MEcH-Amm, APPLIOATION FILED JUNE 12,1909.

Patented Man, 1911.

W W xx M IRA C. BUCKMINSTER, OF BEVERLY, MASSACHUSETTS, ASSIGNOR TOUNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OFNEW JERSEY.

RESURFACING MECHANISM.

To all whom it may concern:

Be it known that I, Ina C. BUCKMINSTER, a citizen of the United States,residing at Beverly, in the county of Essex and State of Massachusetts,have invented certain improvements in Resurfacing Mechanisms, of whichthe following description, in connection with the accompanying drawings,is a specification, like reference characters on the drawings indicatinglike parts in the several figures.

This invention relates to machines for cutting sheet material. andparticularly to machines for dieing out thin sheet material, such asupper leather for boots and shoes.

A principal object of the invention is to provide improved means forresurfacing the stock supporting bed in machines of the aforementionedtype. It is important in machines of this type and particularly inmachines used in cutting out upper leather that the cutting surface ofthe stock supporting bed he kept comparatively smooth and that itssurface be kept in a plane substantially parallel with the plane inwhich the pressure surface of the platen carrying member lies. It isalso important that the resurfacing operation be performed quickly so asto consume as little as possible of the time of the operator.

A further object of the invention is to provided resurfacing means whichwill perform the resurfacing operation more quickly and will alsoperform it better than mechanism heretofore used.

Specifically the invention comprises the provision in a machine fordieing out thin sheet material, such as upper leather for boots andshoes, having a presser member which swings about a vertical axis at oneside of the bed into operative relation to dif ferent parts of the bed,of means for resur facing the bed, comprising a rotary cutter mounted tomove longitudinally of the presser member and driven from the operatingmechanism through which the pressing operation is effected.

In the accompanying drawings,-Figure 1 is a left-hand side elevation ofa machine embodying the invention; Fig. 2 is a sectional detail showingthe manner of attaching the resurfacing mechanism to the presser member;Fig. 3 is a detail view partly in section of the cutting tool and itsanti-friction Specification of Letters Patent.

Application filed June 12, 1909.

Patented Mar. *7, 1911.

Serial No. 501,869.

bearing, and Fig. at is a detail perspective of the means for lockingthe clutch actuating lever during the resurfacing operation.

The machine in which the invention is shown as embodied is of the typedisclosed in the United States Letters Patent to Arthur Bates, No.921,503, May 11, 1909, and comprises a table 2 formed upon abracketattached to the frame 1 of the machine, said table supporting a cuttingblock 6 of wood or other suitable material over which is arranged to beswung a presser member 8 clamped upon a post 10 mounted to reciprocatevertically and to oscillate about its vertical axis in bearings 12 and14 in the machine frame, the upper bearing 12 being formed in an upwardextension 16 of the frame which is arched over the lower bearing 1 1above the presser member 8.

Vertical reciprocation is imparted to the presser member throughsuitable connections to a main driving shaft 18 to which is arranged tobe clutched a loose pulley 20 by suitable clutch mechanism not hereinspecifically illustrated or described. The clutch is operated throughconnections to a starting handle 28 comprising a rod 22 and a lever 24,said lever having intermediate its ends a swivel joint surrounding thepost 10, an arm 26 being adjustably connected to one member of saidswivel joint. These parts may be substantially the same as thosedisclosed in the said Letters Patent.

When it is desired to resurface the cutting block or bed 6 the startinghandle 28 is locked against clutch actuating movement by locking meanscomprising a hook 118 pivoted upon the back of the up ard extension 16of the frame and arranged to hook over the rear end of the lever 24. Theresurfacing mechanism is then clamped upon the presser member 8. Thismechanism comprises, as illustrated, a bracket or frame which may beplaced upon the presser member by sliding it lengthwise over the platenportion of the same, said bracket being constructed and arranged to beclamped in position upon said presser member by set screws 84 mountedinyokes' 85 which extend under the presser member 8, three yokes be ingshown, lugs 86 upon the Vertical guide portion 87 of the supportingbracket aiding to keep the bracket in horizontal position upon thepresser member.

The vertical guide portion 87 of the bracket has formed in it adove-tailed guideway in which travels the dove-tailed extension of thecutter carrying carriage 112 hereinafter to be described.

The cutting tool is preferably of the rotary type and will behereinafter more specifically described. The power for operating thecutting tool is taken from a pulley 88 formed upon, or attached to, theloose pulley 20, a belt 89 transmitting the rotary motion of this pulleyto a smaller pulley 90 loosely mounted upon a stud shaft 92 carried in abracket 94, said pulley having attached to it a gear 96 which mesheswith a pinion 98 upon one end of a short shaft 100 mounted in bearingsin a second bracket 101 attached to the upstanding part 116 of themachine frame.

The bracket 9-1 is pivoted upon the shaft 100 so that it may be turnedabout said shaft to permit the convenient removal of the bolt 89. hen inthe position shown in Fig.1 the bracket 91 rests against a stop 102formed upon the bracket 101. The forward end of the short shaft 100 isenlarged so that it provides a shoulder by which it may be confined inits bearing, and in this enlarged end is a socket having a key, saidsocket receiving the grooved rigid end of a flexible shaft 103 carriedin a flexible casing 104, the groove in the end of said shaft receivingthe key in the socket in the shaft 100 whereby the two shafts arecompelled to rotate together.

The solid or rigid end of the flexible shaft 103 is mounted'in thebearing casing 105 clamped between clamping jaws 106, 107. The cutterused in this form of the invention is preferably a disk saw 108 havingits teeth set slightly out of the plane of its lower surface wherebythey may cut into the surface of the cutting bed 6 as the saw is movedover said bed. The flexible shaft 103 has its lower end attached to avertical shaft 109 mounted in ball bearings 110 in the carriage 112, thesaw 108 being screwed upon the lower end of this shaft. A handle 11% isprovided by which the carriage 112 may be moved longitudinally of thepresser member 8.

The ball bearing cage is confined in the carriage 112 by clamping bolts116 passing through the carriage and provided with laterally curvedrecesses concentric with the cage. In order that the carriage 112 may belocked in the different positions upon the presser member 8 into whichit is moved during the resurfacing operation, the upstanding portion 87of the bracket is provided with openings 124.- spaced apart distancesslightly less than the diameter of the saw 108, and a spring-pressedplunger 122 controlled by a thumb lever 120 is arranged to enter theseopenings successively. hen

the operator desires to move the carriage into a new position ofadjustment he presses the lever 120 and withdraws the plunger122 out ofthe opening into which it projects and slides the carriage 112 along thebeam until the plunger 122 enters a succeeding opening when the saw willbe in proper position to be moved through its next resurfacing are.

In practice a considerable part of the operating mechanism is leftconstantly upon the machine. In the form of the invention hereinillustrated the supporting bracket is removed from the presser arm 8 andwith it the cutter carriage and the flexible shaft. To permit theremoval of the flexible shaft the clamping action of the clamp members106, 107 on the bearing casing 105 is released and the casing may thenbe withdrawn longitudinally of said clamp.

The operation of the resurfacing mechanism will be understood from theforegoing description. but may be briefly recapitulated as follows: Theresurfacing mcchanisni having been clamped upon the presser member 8,the operator grasps the handle 111 and adjusts the carriage 112 over thepart of the bed from front to back at which the resurfacing operation isto be begun. He then grasps the starting handle 28 which has been lockedagainst its clutch actuating movement and swings the presser member backand forth over the bed 6, adjusting the carriage longitudinally ofthe'presser member as the resurfacing in the first arc of travel iscompleted so that successive arcs will be resurfaced until the entirebed is covered.

If desired, the presser member 8 may be swung by the same handle bywhich the carriage is moved longitudinally of said mem her and thus theoperator may effect the resurfacing operation by the use of a singlehand or it may be swung in any other suitable and convenient manner.

Having described my invention, what I claim as new and desire to secureby Letters Patent of the United States is 1. A machine of the classdescribed, having in combination, presser members relatively movableinto difierent operative relations to each other, means carried by oneof said membersv for resurfacing the other, comprising a rotary cutter,and means for eflecting a pressing operation of said members havingassociated therewith means to operate said cutter during the resurfacingoperation.

2. A machine of the class described, having in combination, pressermembers relatively movable into different operative relations to eachother, means carried by one of said members for resurfacing the other,comprising a rotary cutter, means for effect ing a pressing operation ofsaid members and connections between said last-named CIY.

vertical reciprocation of said member, and

means operated from said last-named means for resurfacing said bed.

5. A machine of the class described, having in combination, a bed, apresser member arranged to swing about. a vertical axis at one side ofsaid bed into different operative relations to said bed, mechanism foreffect ing a vertical reciprocation of said member, and means carried bysaid presser member and operated from said mechanism for resurfacingsaid bed.

(3. A machine of the class described, having in combination, a bed, a.presser member arranged to swing about a vertical axis at one side ofsaid bed into different operative relations thereto, a rotary cuttermounted upon said presser member to slide longitudinally thereof intodifferent cutting relations to said bed, means for operating saidpresser member and means connected to said operating means forautomatically rotating said cutter.

7. A machine of the class described, having in combination, a bed, apresser member movable thereover, a resurfacing device, comprising arotary cutter carried by said presser member and movable over said bedin different paths, and means for automatically rotating said cutter,said resurfacing device being removable from said presser member when itis desired to effect a pressing operation.

8. A machine of the class described, having in combination, a bed, apresser member movable thereover, a resurfacing device, comprising arotary cutter carried by said presser member and movable over said bedin different paths, means for effecting a pressing operation of saidmember having associated therewith means to operate said cutter, andmeans for locking said presser member against operation during theoperation of said cutter.

9. A machine of the class described, having in combination, a bed, apresser member movable thereover, a resurfacing device, comprising arotary cutter carried by said presser member and movable over said bedin different paths, a driving shaft, operating connections between saidshaft and said presser member, a normally rotated loose pulley arrangedto be clutched to said shaft to effect a pressing operation andoperating connections between said rotary cutter and said pulley wherebysaid cutter may be operated independently of said presser member.

10. A machine of the class described, having in combination, a bed, apresser member movable thereover, a resurfacing device comprising arotary cutter carried by said presser member and movable over said bedin different paths, and means for automatically rotating said cutter,said mechanism being so constructed and arranged that the resurfacingdevice may be removed from said presser member when it is desired toeflect the pressing operation and that the greater part of the means foroperating the cutter may be left permanently upon the machine.

11. A machine of the class described, having in combination, a bed, apresser member movable thereover, resurfacing mechanism carried by saidpresser member, means for effecting a pressing operation of said member,means for actuating said operating means, comprising a lever, and meansfor preventing the actuation of said operating means, comprising a hookarranged to be hooked over one arm of said lever.

12. A machine of the class described, having in combination, a bed, apresser member movable thereover, means for effecting a pressingoperation of said member, means for actuating said operating means,comprising a lever, and means for preventing the actuation of saidoperating means, comprising a hook arranged to hook over one of the armsof said lever.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

IRA C. BUCKMINSTER.

Vitnesses LEONARD M. JoHNsoN, H. Donsnv SPENCER.

Copies of this patent may be obtained for five cents each, byaddressing" the Commissioner of Patents, Washington, D. C.

